452
FZUS51 KBOX 290504
CWFBOX
COASTAL WATERS FORECAST FOR MASSACHUSETTS AND RHODE ISLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
103 AM EDT WED APR 29 2026
COASTAL WATERS FROM THE MERRIMACK RIVER MA TO WATCH HILL RI OUT
TO 60 NM
ANZ200-291800-
103 AM EDT WED APR 29 2026
SYNOPSIS FOR MASSACHUSETTS AND RHODE ISLAND COASTAL WATERS
LOW PRES WELL SOUTHEAST OF 40N/70W WILL CONTINUE TO DRIFT
EVEN FURTHER SOUTHEAST TONIGHT. OTHERWISE...HIGH PRES WILL REMAIN IN
CONTROL OF OUR WATERS INTO EARLY WED. LOW PRES THEN APPROACHES FROM
THE WEST LATER WED AND INTENSIFIES OFF THE COAST THU EVENTUALLY
LIFTING INTO MAINE FRI. THIS LOW WILL CONTINUE TO LIFT NORTHWEST
INTO QUEBEC BY SAT.
ANZ250-291800-
COASTAL WATERS EAST OF IPSWICH BAY AND THE STELLWAGEN BANK
NATIONAL MARINE SANCTUARY-
103 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 5 TO 7 FT. WAVE
DETAIL: E 7 FT AT 10 SECONDS AND N 1 FOOT AT 3 SECONDS. PATCHY
FOG. A SLIGHT CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO
3 NM.
WED
NE WINDS 5 TO 10 KT. SEAS 5 TO 8 FT. WAVE DETAIL: E 8 FT
AT 10 SECONDS AND N 1 FOOT AT 5 SECONDS. PATCHY FOG. VSBY 1 TO
3 NM IN THE MORNING.
WED NIGHT
E WINDS 5 TO 10 KT, BECOMING SE 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 5 TO 8 FT. WAVE DETAIL: E
7 FT AT 10 SECONDS AND NE 1 FOOT AT 2 SECONDS. PATCHY FOG.
SHOWERS. VSBY 1 NM OR LESS.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
9 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND S 1 FOOT AT
4 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO 6 FT AFTER MIDNIGHT.
WAVE DETAIL: E 6 FT AT 10 SECONDS AND E 2 FT AT 5 SECONDS,
BECOMING E 5 FT AT 10 SECONDS AND W 2 FT AT 3 SECONDS. SHOWERS
LIKELY IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT
4 SECONDS.
SAT THROUGH SUN
W WINDS 5 TO 10 KT. SEAS 3 TO 5 FT.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ251-291800-
MASSACHUSETTS BAY AND IPSWICH BAY-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: E 5 FT AT 10 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY
FOG. PATCHY DRIZZLE.
WED
NE WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT
AT 10 SECONDS AND NE 2 FT AT 6 SECONDS. PATCHY FOG IN THE MORNING
WITH VSBY 1 TO 3 NM.
WED NIGHT
NE WINDS AROUND 10 KT, BECOMING E AFTER MIDNIGHT.
SEAS 4 TO 6 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND NE 1 FOOT
AT 3 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU
SE WINDS 10 TO 15 KT, BECOMING NE IN THE AFTERNOON. SEAS
5 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND SW 1 FOOT AT
2 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W
3 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND W 2 FT AT
3 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 5 TO 10 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ231-291800-
CAPE COD BAY-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: NE 2 FT AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS. PATCHY
FOG. A SLIGHT CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO
3 NM.
WED
N WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT
AT 11 SECONDS AND N 1 FOOT AT 3 SECONDS. A CHANCE OF. PATCHY FOG.
VSBY 1 NM OR LESS IN THE MORNING.
WED NIGHT
NE WINDS 5 TO 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT AT 11 SECONDS AND N 1 FOOT
AT 3 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU
SE WINDS 5 TO 10 KT. SEAS 2 TO 4 FT. WAVE DETAIL: NE 2 FT
AT 10 SECONDS AND SE 1 FOOT AT 3 SECONDS. SHOWERS. PATCHY FOG IN
THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
W WINDS 5 TO 10 KT, INCREASING TO 10 TO 15 KT WITH
GUSTS UP TO 20 KT AFTER MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: NE
2 FT AT 10 SECONDS AND NW 1 FOOT AT 2 SECONDS. A CHANCE OF
SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E 1 FOOT AT
5 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 5 TO 10 KT. SEAS AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ254-291800-
COASTAL WATERS FROM PROVINCETOWN MA TO CHATHAM MA TO NANTUCKET MA
OUT 20 NM-
103 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
REST OF TONIGHT
N WINDS 10 TO 15 KT. SEAS 6 TO 8 FT. WAVE
DETAIL: E 8 FT AT 10 SECONDS AND N 4 FT AT 5 SECONDS. PATCHY FOG.
A CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO 3 NM.
WED
N WINDS AROUND 10 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E 8 FT
AT 10 SECONDS AND N 4 FT AT 5 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS IN THE AFTERNOON. VSBY 1 NM OR LESS, INCREASING TO 1 TO
3 NM IN THE AFTERNOON.
WED NIGHT
E WINDS AROUND 10 KT, BECOMING SE WITH GUSTS UP TO
20 KT AFTER MIDNIGHT. SEAS 5 TO 8 FT. WAVE DETAIL: E 7 FT AT
10 SECONDS AND E 3 FT AT 5 SECONDS. PATCHY FOG. SHOWERS. VSBY
1 TO 3 NM.
THU
SE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS 6 TO
9 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 3 FT AT 5 SECONDS.
SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 8 FT, SUBSIDING TO 4 TO 6 FT AFTER MIDNIGHT.
WAVE DETAIL: E 6 FT AT 10 SECONDS AND SE 3 FT AT 5 SECONDS,
BECOMING E 6 FT AT 10 SECONDS AND E 3 FT AT 5 SECONDS. A CHANCE
OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND SW 3 FT AT
5 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ255-291800-
COASTAL WATERS EXTENDING OUT TO 25 NM SOUTH OF MARTHAS VINEYARD
AND NANTUCKET-
103 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
REST OF TONIGHT
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. WAVE
DETAIL: E 7 FT AT 10 SECONDS AND N 3 FT AT 4 SECONDS. PATCHY FOG.
A SLIGHT CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO 3 NM.
WED
N WINDS 10 TO 15 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E 7 FT
AT 11 SECONDS AND N 4 FT AT 5 SECONDS. A CHANCE OF. PATCHY FOG.
VSBY 1 TO 3 NM IN THE MORNING.
WED NIGHT
E WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 5 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND E 5 FT AT
5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. SEAS
5 TO 7 FT. WAVE DETAIL: SE 6 FT AT 10 SECONDS AND SW 2 FT AT
4 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
W WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 5 TO 7 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND
W 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT. WAVE
DETAIL: W 5 FT AT 5 SECONDS AND SE 5 FT AT 10 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS 3 TO 4 FT.
SAT NIGHT
W WINDS AROUND 10 KT. SEAS 3 TO 4 FT. A CHANCE OF
SHOWERS.
SUN AND SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ256-291800-
COASTAL WATERS FROM MONTAUK NY TO MARTHAS VINEYARD EXTENDING OUT
TO 20 NM SOUTH OF BLOCK ISLAND-
103 AM EDT WED APR 29 2026
..SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY AFTERNOON
REST OF TONIGHT
N WINDS 10 TO 15 KT. SEAS 4 TO 5 FT. WAVE
DETAIL: E 5 FT AT 10 SECONDS AND N 2 FT AT 4 SECONDS. PATCHY FOG.
PATCHY DRIZZLE. VSBY 1 TO 3 NM.
WED
N WINDS 10 TO 15 KT, BECOMING E 5 TO 10 KT IN THE
AFTERNOON. SEAS 4 TO 5 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND
NE 3 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 4 TO 6 FT. WAVE DETAIL: SE
5 FT AT 5 SECONDS AND E 5 FT AT 10 SECONDS. PATCHY FOG. SHOWERS.
VSBY 1 NM OR LESS AFTER MIDNIGHT.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
5 TO 7 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND S 4 FT AT
5 SECONDS. SHOWERS, MAINLY IN THE MORNING. PATCHY FOG IN THE
MORNING WITH VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 10 TO 15 KT, INCREASING TO 15 TO 20 KT AFTER
MIDNIGHT. SEAS 4 TO 6 FT. WAVE DETAIL: SE 5 FT AT 10 SECONDS AND
W 4 FT AT 4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 5 FT. WAVE
DETAIL: W 4 FT AT 5 SECONDS AND SE 4 FT AT 10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ232-291800-
NANTUCKET SOUND-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 10 TO 15 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: NE 3 FT AT 5 SECONDS AND E 3 FT AT 11 SECONDS. PATCHY
FOG. A SLIGHT CHANCE OF SHOWERS WITH PATCHY DRIZZLE. VSBY 1 TO
3 NM.
WED
N WINDS 10 TO 15 KT. SEAS 3 TO 5 FT. WAVE DETAIL: N 3 FT
AT 4 SECONDS AND E 2 FT AT 11 SECONDS. A CHANCE OF. PATCHY FOG.
VSBY 1 NM OR LESS IN THE MORNING.
WED NIGHT
NE WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 3 TO 5 FT. WAVE DETAIL: E 2 FT AT 5 SECONDS AND E 2 FT AT
10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM.
THU
SE WINDS 10 TO 15 KT, BECOMING S IN THE AFTERNOON. SEAS
3 TO 5 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND SE 2 FT AT
10 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 3 TO 5 FT. WAVE DETAIL: W 2 FT AT 4 SECONDS AND E
2 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND E 2 FT AT
5 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ233-291800-
VINEYARD SOUND-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE
DETAIL: N 2 FT AT 4 SECONDS AND S 1 FOOT AT 11 SECONDS. PATCHY
FOG. PATCHY DRIZZLE. VSBY 1 TO 3 NM.
WED
NE WINDS AROUND 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: N
1 FOOT AT 4 SECONDS AND S 1 FOOT AT 11 SECONDS. PATCHY FOG IN THE
MORNING WITH VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS 2 TO 3 FT. WAVE DETAIL: NW
1 FOOT AT 3 SECONDS AND NE 1 FOOT AT 4 SECONDS. PATCHY FOG.
SHOWERS.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
3 TO 4 FT. WAVE DETAIL: SE 2 FT AT 5 SECONDS AND NW 1 FOOT AT
2 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 4 FT. WAVE DETAIL: W 3 FT AT 4 SECONDS AND E
2 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 2 FT AT 5 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ234-291800-
BUZZARDS BAY-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE
DETAIL: N 2 FT AT 3 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY
FOG. PATCHY DRIZZLE.
WED
NE WINDS AROUND 10 KT. SEAS AROUND 2 FT. WAVE DETAIL: N
1 FOOT AT 3 SECONDS AND SE 1 FOOT AT 11 SECONDS. PATCHY FOG IN
THE MORNING WITH VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 5 TO 10 KT. SEAS AROUND 2 FT. WAVE DETAIL:
NE 1 FOOT AT 2 SECONDS AND NW 1 FOOT AT 3 SECONDS. PATCHY FOG.
SHOWERS.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
2 TO 3 FT. WAVE DETAIL: SW 1 FOOT AT 3 SECONDS AND SE 1 FOOT AT
3 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 2 TO 3 FT. WAVE DETAIL: W 2 FT AT 3 SECONDS AND SE
1 FOOT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 3 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND E 2 FT AT
5 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ235-291800-
RHODE ISLAND SOUND-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS AROUND 10 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SE 4 FT AT 10 SECONDS AND N 2 FT AT 4 SECONDS. PATCHY
FOG. PATCHY DRIZZLE.
WED
N WINDS AROUND 10 KT, BECOMING E IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: SE 3 FT AT 10 SECONDS AND N 2 FT AT
3 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
WED NIGHT
SE WINDS AROUND 10 KT. SEAS 3 TO 5 FT. WAVE DETAIL:
SE 4 FT AT 10 SECONDS AND W 3 FT AT 5 SECONDS. PATCHY FOG.
SHOWERS.
THU
SE WINDS AROUND 10 KT, BECOMING SW IN THE AFTERNOON. SEAS
4 TO 6 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND SE 3 FT AT
5 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND W 3 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT. WAVE
DETAIL: SW 4 FT AT 5 SECONDS AND SE 3 FT AT 10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 2 TO 4 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ237-291800-
BLOCK ISLAND SOUND-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE
DETAIL: E 4 FT AT 9 SECONDS AND N 2 FT AT 4 SECONDS.
WED
NE WINDS 5 TO 10 KT, BECOMING S IN THE AFTERNOON. SEAS
2 TO 4 FT. WAVE DETAIL: E 4 FT AT 10 SECONDS AND NE 2 FT AT
4 SECONDS.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 3 TO 4 FT. WAVE DETAIL: SE
3 FT AT 10 SECONDS AND W 2 FT AT 5 SECONDS. PATCHY FOG. SHOWERS.
VSBY 1 TO 3 NM AFTER MIDNIGHT.
THU
E WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. SEAS 3 TO
5 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND E 2 FT AT 5 SECONDS.
SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO 3 NM.
THU NIGHT
NW WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
3 TO 5 FT. WAVE DETAIL: SE 4 FT AT 10 SECONDS AND SW 2 FT AT
4 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 2 TO 4 FT. WAVE DETAIL: SW 3 FT AT 5 SECONDS AND SE 3 FT AT
10 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ230-291800-
BOSTON HARBOR-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS,
EXCEPT 2 TO 4 FT AT THE OUTER HARBOR ENTRANCE.
WED
NE WINDS 5 TO 10 KT. WAVES 1 FOOT OR LESS, EXCEPT 2 TO
4 FT AT THE OUTER HARBOR ENTRANCE.
WED NIGHT
E WINDS AROUND 10 KT. WAVES 1 FOOT OR LESS, EXCEPT
2 TO 4 FT AT THE OUTER HARBOR ENTRANCE. PATCHY FOG. SHOWERS. VSBY
1 TO 3 NM, DECREASING TO 1 NM OR LESS AFTER MIDNIGHT.
THU
E WINDS 5 TO 10 KT, BECOMING NE IN THE AFTERNOON. WAVES
1 FOOT OR LESS, EXCEPT 2 TO 4 FT AT THE OUTER HARBOR ENTRANCE.
SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
THU NIGHT
NW WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. WAVES AROUND 2 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES AROUND 2 FT.
SAT THROUGH SUN NIGHT
W WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ236-291800-
NARRAGANSETT BAY-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 5 TO 10 KT. WAVES AROUND 2 FT.
WED
N WINDS 5 TO 10 KT, BECOMING SE IN THE AFTERNOON. WAVES
AROUND 2 FT.
WED NIGHT
SE WINDS 5 TO 10 KT. WAVES 2 TO 3 FT. A CHANCE OF
SHOWERS IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT. PATCHY FOG
AFTER MIDNIGHT.
THU
SE WINDS 5 TO 10 KT, BECOMING W IN THE AFTERNOON. WAVES
2 TO 4 FT. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. WAVES 2 TO 3 FT. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
WAVES 2 TO 3 FT.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. WAVES 2 TO 3 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ280-291800-
OCEAN WATERS FROM THE MERRIMACK RIVER TO PLYMOUTH FROM 40 TO
60 NM-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
NE WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND N 1 FOOT AT
2 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH PATCHY DRIZZLE.
VSBY 1 TO 3 NM.
WED
NE WINDS AROUND 10 KT. SEAS 7 TO 9 FT. WAVE DETAIL: E 9 FT
AT 10 SECONDS AND NW 1 FOOT AT 2 SECONDS. PATCHY FOG. A CHANCE OF
SHOWERS. VSBY 1 TO 3 NM.
WED NIGHT
E WINDS 10 TO 15 KT, BECOMING SE 15 TO 20 KT AFTER
MIDNIGHT. GUSTS UP TO 25 KT. SEAS 7 TO 8 FT. WAVE DETAIL: E 7 FT
AT 10 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS AFTER MIDNIGHT.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 8 TO
10 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND SE 1 FOOT AT
2 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
6 TO 9 FT, SUBSIDING TO 5 TO 6 FT AFTER MIDNIGHT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND W 1 FOOT AT 2 SECONDS, BECOMING E 6 FT AT
10 SECONDS AND W 2 FT AT 3 SECONDS. A CHANCE OF SHOWERS.
FRI AND FRI NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 5 TO 6 FT. WAVE DETAIL: E 5 FT AT 10 SECONDS AND W 3 FT AT
4 SECONDS.
SAT THROUGH SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO
20 KT. SEAS 3 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ281-291800-
OCEAN WATERS FROM PROVINCETOWN TO NANTUCKET FROM 20 TO 60 NM-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 9 TO 10 FT. WAVE DETAIL: E 10 FT AT 10 SECONDS AND NE 4 FT
AT 5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH PATCHY
DRIZZLE. VSBY 1 NM OR LESS.
WED
NE WINDS AROUND 10 KT. SEAS 8 TO 10 FT, SUBSIDING TO 7 TO
8 FT IN THE AFTERNOON. WAVE DETAIL: E 9 FT AT 10 SECONDS AND N
4 FT AT 6 SECONDS, BECOMING E 8 FT AT 10 SECONDS AND E 4 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS. VSBY 1 NM OR LESS,
INCREASING TO 1 TO 3 NM IN THE AFTERNOON.
WED NIGHT
E WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
7 TO 8 FT. WAVE DETAIL: E 8 FT AT 10 SECONDS AND E 3 FT AT
5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 NM OR LESS.
THU
SE WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT. SEAS 7 TO
9 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 4 FT AT 5 SECONDS.
SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR LESS.
THU NIGHT
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT AFTER
MIDNIGHT. SEAS 6 TO 8 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E
4 FT AT 5 SECONDS. A CHANCE OF SHOWERS IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT. SEAS 5 TO 6 FT. WAVE
DETAIL: E 6 FT AT 10 SECONDS AND SW 4 FT AT 6 SECONDS.
SAT
SW WINDS 5 TO 10 KT. SEAS 4 TO 5 FT.
SAT NIGHT AND SUN
W WINDS 10 TO 15 KT. GUSTS UP TO 20 KT. SEAS
4 TO 5 FT. A CHANCE OF SHOWERS.
SUN NIGHT
W WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT. SEAS
4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ282-291800-
OCEAN WATERS FROM MARTHAS VINEYARD TO NANTUCKET FROM 25 TO 60 NM-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 10 TO 15 KT WITH GUSTS UP TO 20 KT.
SEAS 7 TO 9 FT. WAVE DETAIL: E 9 FT AT 10 SECONDS AND N 5 FT AT
5 SECONDS. PATCHY FOG. A CHANCE OF SHOWERS WITH PATCHY DRIZZLE.
VSBY 1 TO 3 NM.
WED
N WINDS 10 TO 15 KT. SEAS 6 TO 9 FT. WAVE DETAIL: E 9 FT
AT 10 SECONDS AND NE 4 FT AT 6 SECONDS. PATCHY FOG IN THE
MORNING. A CHANCE OF SHOWERS IN THE AFTERNOON. VSBY 1 TO 3 NM IN
THE MORNING.
WED NIGHT
NE WINDS AROUND 10 KT, BECOMING SE AFTER MIDNIGHT.
SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 5 FT AT
5 SECONDS. PATCHY FOG. SHOWERS. VSBY 1 TO 3 NM, DECREASING TO
1 NM OR LESS AFTER MIDNIGHT.
THU
SE WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. SEAS
6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND E 3 FT AT
5 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
W WINDS 15 TO 20 KT. SEAS 6 TO 7 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND W 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND E 5 FT AT
10 SECONDS.
SAT AND SAT NIGHT
SW WINDS 5 TO 10 KT, BECOMING NW 10 TO
15 KT. SEAS 4 TO 5 FT. A CHANCE OF SHOWERS.
SUN AND SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 6 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
ANZ283-291800-
OCEAN WATERS FROM MONTAUK NY TO MARTHAS VINEYARD FROM 25 TO 60 NM-
103 AM EDT WED APR 29 2026
REST OF TONIGHT
N WINDS 10 TO 15 KT. SEAS 6 TO 7 FT. WAVE
DETAIL: E 7 FT AT 10 SECONDS AND N 2 FT AT 4 SECONDS. PATCHY FOG.
PATCHY DRIZZLE. VSBY 1 TO 3 NM.
WED
N WINDS 10 TO 15 KT, DIMINISHING TO 5 TO 10 KT IN THE
AFTERNOON. SEAS 6 TO 7 FT. WAVE DETAIL: E 7 FT AT 10 SECONDS AND
N 4 FT AT 5 SECONDS. PATCHY FOG IN THE MORNING WITH VSBY 1 TO
3 NM.
WED NIGHT
SE WINDS 5 TO 10 KT. SEAS 5 TO 6 FT. WAVE DETAIL: E
6 FT AT 6 SECONDS AND E 6 FT AT 10 SECONDS. PATCHY FOG. A CHANCE
OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT
WITH VSBY 1 NM OR LESS.
THU
SE WINDS 10 TO 15 KT, BECOMING SW IN THE AFTERNOON. SEAS
6 TO 7 FT. WAVE DETAIL: E 6 FT AT 10 SECONDS AND SE 3 FT AT
5 SECONDS. SHOWERS. PATCHY FOG IN THE MORNING WITH VSBY 1 NM OR
LESS.
THU NIGHT
W WINDS 15 TO 20 KT. SEAS 5 TO 7 FT. WAVE DETAIL: E
6 FT AT 10 SECONDS AND W 4 FT AT 5 SECONDS. A CHANCE OF SHOWERS
IN THE EVENING.
FRI AND FRI NIGHT
W WINDS 15 TO 20 KT WITH GUSTS UP TO 25 KT.
SEAS 4 TO 6 FT. WAVE DETAIL: SW 5 FT AT 6 SECONDS AND E 4 FT AT
10 SECONDS.
SAT AND SAT NIGHT
W WINDS 5 TO 10 KT, BECOMING NW 10 TO 15 KT.
SEAS 3 TO 4 FT. A CHANCE OF SHOWERS.
SUN AND SUN NIGHT
W WINDS 15 TO 20 KT. SEAS 4 TO 5 FT.
SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT, WHICH IS THE
AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE
HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.
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